$OpenBSD: patch-erts_lib_src_Makefile_in,v 1.1 2016/06/30 07:18:19 jasper Exp $
--- erts/lib_src/Makefile.in.orig	Tue Jun 23 20:56:21 2015
+++ erts/lib_src/Makefile.in	Thu Jun 25 13:47:13 2015
@@ -39,7 +39,7 @@ INSTALL_PROGRAM=@INSTALL_PROGRAM@
 ERLANG_OSTYPE=@ERLANG_OSTYPE@
 
 OMIT_FP=false
-CFLAGS=$(subst O2,O3, @CFLAGS@)
+CFLAGS=@CFLAGS@
 
 ifeq ($(TYPE),debug)
 CFLAGS=@DEBUG_CFLAGS@ -DDEBUG
